# Parallels Client

| **Source**       | **Destination**                    | **Protocols**                                           | **Ports**                                          | **Description**                                                                                                                                                                                                                                         |
| ---------------- | ---------------------------------- | ------------------------------------------------------- | -------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Parallels Client | HALB                               | <p>TCP, UDP</p><p>TCP, UDP</p>                          | <p>80, 443</p><p>20009</p>                         | <p>Management and user session connections.</p><p>Device Manager shadowing via Firewall (indirect network connection).</p>                                                                                                                              |
|                  | RAS Secure Gateway Forwarding mode | <p>TCP, UDP</p><p>TCP, UDP</p><p>UDP</p>                | <p>80, 443</p><p>3389</p><p>20000</p>              | <p>Management and user session connections.</p><p>Optional - Used for user session if RDP load balancing is enabled (Standard RDP).</p><p>Secure Gateway lookup broadcast.</p>                                                                          |
|                  | RAS Secure Gateway Normal mode     | <p>TCP, UDP</p><p>TCP, UDP</p><p>TCP, UDP</p><p>UDP</p> | <p>80, 443,</p><p>3389</p><p>20009</p><p>20000</p> | <p>Management and user session connections.</p><p>Optional - Used for user session if RDP load balancing is enabled (Standard RDP).</p><p>Device Manager shadowing via Firewall (indirect network connection)</p><p>Secure Gateway Lookup Broadcast</p> |
|                  | Session host (VDI, RDS, RemotePC)  | TCP, UDP                                                | 3389                                               | Used for user session connections in Direct Mode only. RDP connection is always encrypted.                                                                                                                                                              |
|                  | Azure Virtual Desktop Services     | <p>TCP</p><p>UDP</p>                                    | <p>443</p><p>3390</p>                              | <p>Azure Virtual Desktop Gateway connection</p><p>Used for user session connections in ShortPath mode only.</p>                                                                                                                                         |
|                  | Microsoft site                     | TCP                                                     | 443                                                | Download Microsoft Remote Desktop (MSRDC) client                                                                                                                                                                                                        |
|                  | Parallels site                     | TCP                                                     | 80, 443                                            | Check for updates and download Parallels Client                                                                                                                                                                                                         |